A temporary loss of consciousness. / A temporary loss of memory. / An instance of censorship, especially a temporary one. / A large-scale power failure, and resulting loss of electricity to consumers.

(nonstandard) Alternative form of black out

plural of blackout

A hand-held lamp that has sliding or rotating doors to adjust the amount of light emitted.

plural of blackout cake

A dark, rich chocolate cake made with chocolate pudding.

plural of blackout lamp

plural of blackout gag

A rapid-fire joke in slapstick comedy.

A curtain made from blackout material, designed to block light (e.g. sunlight through a window) much more than a standard curtain